Cita APA (7a ed.)

Frey, N., Fisher, D., & Everlove, S. (2009). Productive group work: How to engage students, build teamwork, and promote understanding. ASCD.

Cita Chicago Style (17a ed.)

Frey, Nancy, Douglas Fisher, y Sandi Everlove. Productive Group Work: How to Engage Students, Build Teamwork, and Promote Understanding. Alexandria, Va.: ASCD, 2009.

Cita MLA (9a ed.)

Frey, Nancy, et al. Productive Group Work: How to Engage Students, Build Teamwork, and Promote Understanding. ASCD, 2009.